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Magnetic properties of charged excitons in self‐assembled quantum dots
Author(s) -
Schulhauser C.,
Högele A.,
Warburton R. J.,
Govorov A. O.,
Schoenfeld W.,
Garcia J. M.,
Petroff P. M.,
Karrai K.
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200303041
Subject(s) - exciton , quantum dot , singlet state , magnetic field , biexciton , physics , luminescence , condensed matter physics , dispersion (optics) , photoluminescence , photon , atomic physics , triplet state , quantum mechanics , excited state , optoelectronics
We report on low temperature (4.2 K) magneto‐luminescence measurements performed on charged tuneable GaInAs self‐assembled quantum dots. We mapped the magnetic field dispersion (0–9 Tesla) of the exciton with excess electron charges set from 0 to 3. For the doubly and triply charged excitons the emission line shows a doublet corresponding to the singlet and triplet configuration of the quantum dot in the final state after photon emission. We map here for the first time the dispersion of the singlet state of the doubly charged exciton and show that the triply charged exciton undergoes a transition resulting from a magnetic field induced frustration of the Hund's rule.